Q.1.

Consider the following statements regarding the class-B power amplifiers (Complementary symmetry type):

  1. The efficiency of the amplifier is higher than that of class-A amplifier
  2. The power output is low
  3. Crossover distortion is present
  4. The standby power dissipation is absent.
Which of the above statements are correct?
Q.2.

Which of the following capabilities are available in a Universal Shift Register?

  1. Shift left
  2. Shift right
  3. Parallel load
  4. Serial add
Select the correct answer from the codes given below:
Q.3.

Assertion (A): Cut-in voltage for Germanium diode is greater than that for silicon diode.

Reason (R): Germanium diode has a higher reverse saturation current than silicon diode.

Q.4.

Simplify : A + B + A B + (A + B)AB + C(B + AB)

Q.5.

Which one of the following is a regulated power supply?

Q.6.

Number of fundamental cut-sets of any graph will be

Q.7.

Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 1017 cm-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 1014F. cm-1.
Thermal voltage = 26mV
Permittivity of free space = 8.x 10-14F. cm-1.
Dielectric constant of silicon =A built in potential of the junction.

Q.8.

Consider the following statements:
For am long common power line connecting a switch to a light bulb

  1. It is a distributed circuit.
  2. Time delay for propagation through it is negligible.
  3. It is the form of a shielded coaxial cable of circular cross-section.
  4. As the intensity of the lamp varies, input impedance of this line also changes.
Which of the above statements is/are correct?
Q.9.

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

Q.10.

For a Hertz dipole antenna, the Half Power Beam Width (HPBW) in the E-plane is

Q.11.

In a CMOS CS amplifier, the active load is obtained by connecting a

Q.12.

The number of distinct Boolean expressions of 3 variables is

Q.13.

A 2 μF capacitor is shunted by a 1 kΩ maintained at temperatureK. The rms noise voltage across the capacitor over the entire frequency band is:

Q.14.

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of:

Q.15.

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of:

Q.16.

The feedback control system shown in figure is stable.

Q.17.

A parallel plate capacitor has surface density of rs C/m2. The dielectric inside capacitor is air. The electric field intensities outside and inside the capacitor are

Q.18.

. The signal is __________ .

Q.19.

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

Q.20.

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

Q.21.

The magnitude plot of a composite signal x(t) = e3jt + e4jt is __________ .

Q.22.

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

Q.23.

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

Q.24.

VR at t < T, t = ∞

Q.25.

The number of distinct Boolean expressions of 3 variables is

Q.26.

Find current i.

Q.27.

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

Q.28.

In x = the value of x is

Q.29.

Using 4-bit numbers (n =if k = 00112, how is k expressed in 2's complement?

Q.30.

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of:

Q.31.

A parallel plate capacitor has surface density of rs C/m2. The dielectric inside capacitor is air. The electric field intensities outside and inside the capacitor are

Q.32.

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

Q.33.

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

Q.34.

The magnitude plot of a composite signal x(t) = e3jt + e4jt is __________ .

Q.35.

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

Q.36.

VR at t < T, t = ∞

Q.37.

VR at t < T, t = ∞

Q.38.

Find current i.

Q.39.

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

Q.40.

In x = the value of x is

Q.41.

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

Q.42.

When x(n) is real then the Fourier series coefficients are correlated as __________ .

Q.43.

When x(n) is real then the Fourier series coefficients are correlated as __________ .

Q.44.

In x = the value of x is

Q.45.

Using 4-bit numbers (n =if k = 00112, how is k expressed in 2's complement?

Q.46.

A parallel plate capacitor has surface density of rs C/m2. The dielectric inside capacitor is air. The electric field intensities outside and inside the capacitor are

Q.47.

The Nyquist sampling interval, for the signal sine (700t) + sine (500t) is

Q.48.

Which of the following capabilities are available in a Universal Shift Register?

  1. Shift left
  2. Shift right
  3. Parallel load
  4. Serial add
Select the correct answer from the codes given below:
Q.49.

The system which is unstable is __________ .

Q.50.

VR at t < T, t = ∞